Electrical condenser and manner of mounting the same.



H. R. VAN DEVENTER. ELECTRICAL CONDENSER AND MANNER 0F MOUNTING T APPLICATION FILED FEB. 15. 15I5. 1,181,623.

HE SAME.

IVITNESSIIS" I V m'ivroN. $10:

Patented May 2,1916.

UNITED STATES PATENT OFFICE.

HARRY RANDOLPH VAN DEVENTER, OF SUMTER, SOUTH CAROLINA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO SPLITDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ELECTRICAL CONDENSER AND MANNER 0F MOUNTING THE SAME.

Specification of Letters Patent.

Patented May 2, 1916.

Application filed February 15, 1915. Serial No. 8 ,221.

To all whom it may concern:

Be it known that I, HARRY RANDOLPH VAN DEVENTER, a citizen of the United States, residingat Sumter, in the county of Sumter and State of South Carolina, have lnvented certain new and useful Improvements 111 Electrical Condensers and Manner of Mounting the Same, of which the following is a specification, reference being had to the accompanying drawing.

This invention relates to electric condensers and an improved manner of mounting the same in an ignition dynamo. Condensers as heretofore used for this purpose have been provided with a suitable casing carrying a circuit terminal or terminals, or have been mounted in the armature of the dynamo so as to be protected from mechanical injury. Casings are expensive, as 18 also the method of mounting in the armature. Where terminals must be provided separate from the leaves of the condenser, there 1s always difiiculty in securing good contact. Separate terminals are also expensive.

This invention consists in providing a condenser in which the insulating medium of the condenser itself acts as a casing and in which an easy and cheap method of mounting the circuit terminals directly on the condenser and in connection with the foil leaves is attained.

A further object is to provide a condenser of small dimensions, especially as regards thickness, adapted to be mounted directly across the terminals of the interrupter mechanism commonly used in ignition dynamos.

Another object is to provide a condenser in which the circuit terminals are directly clamped to the. condenser plates, thereby eliminating all soldered COIIIIOCUOIIS.

In the accompanying drawlngs, Figure l is a top view of condenser constructed 1n accordance with my invention. Fig. 2, a side view of the same. Fig. 3, a diagram llustrating the method of construction. Fig. 4, a form of terminal clip, and Fig. 5, a view illustrating how the condenser is mounted in connection with the interrupter mechanism of an ignition dynamo.

Like figures of reference denote the same parts wherever they are shown.

The condenser is built up of alternate metallic sheets such as tin or aluminum foil indicated at 1 and 2, and sheets of a suitable dialectric such as mica, indicated at 3. The top sheet 4 and the bottom sheet 5 of the group are made heavier than the center sheets to secure the necessary stiffness. The ends of alternate sheets of foil are brought out and turned over the ends of the top plate as shown at 6 and 7 and suitable metallic clips shown at 8 and 9 are clamped over the ends of the bundle of foil and mica sheets, thereby forming the unit structure shown in Figs. 1 and 2. As clip 8 engages one group of ends of half the foil sheets, and 9, the remaining half, it will be seen that 8 and 9 form circuit terminals as well as providing means for clamping the condenser structure together.

The foil sheets are so laid in the condenser that the space indicated at 10 is provided at the end of each sheet between the mica sheets, so that all of the foil sheets connected to 9 will not project under that portion of the mica sheets clamped by 8 and vice versa.

The foil sheets are not as wide as the mica sheets, as indicated at 11, so there will be no danger of the foil protruding, so that .alternate layers could come in contact and cause a short circuit. Suitable projecting cars 12 are provided-on each clip, having slotted apertures 13 for the purpose of connecting the condenser in circuit by means of ordinary screws 14, which also mechanically support the condenser.

Fig. 5 shows a condenser as just described in operative position across the interrupter contacts of an ignition dynamo. Suitable supports are furnished on the dynamo,connected to the circuits thereof, and which connect to the ears on said clips. It will be seen that the condenser occupies but little space and is readily covered by the interrupter box cap. As the circuits in which these condensers, are used are well known, I do not describe same.

Having thus described my invention, I claim 1. An electrical condenser comprising imperforate layers of conducting material, imperforate layers of insulating material between the said conducting layers, and. means forming circuit terminals engaging the ends of all of said layers and supported thereby for clamping same together.

2. An electrical condenser comprising layers of conductlng material separated and insulated from one another by insulating material and terminals connected to said conducting material, said terminals forming clampslsurrounding and embracing the ends of all of said layers whereby same are secured together, substantially as described.

3. An electrical condenser comprising layers of insulating material, a plurality of sheets of conducting material, interleaved with said insulating material and having in electrical connection with said plates, and

apertured connecting ears projecting from said clamps.

5. An electrical condenser comprising a core of suitably insulated conductive plates and clamps on the ends of said core embracing all of the elements thereof whereby same is secured together, said clamps forming means whereby said core may be wholly supported as well as connected in circuit.

6. An electrical condenser comprising comparatively thin sheets of insulating material, sheets of conductive material between said thin sheets, a thicker sheet of insulating material, and a pair of clamps embracing the ends of all of said sheets and securing them together and forming circuit terminals for said conductive material.

7. An electrical condenser comprising a bundle of relatively thin insulating and conducting sheets, sulating sheets outside said bundle for stiffening the same, and a pair of clamps surrounding and embracing the ends of said elements and securing all of themlto form a condenser, and serving as circuit terminals therefor.

8. An electrical condenser comprising a bundle of fiat conductive and insulating sheets, clamps embracing the ends of all of said sheets and securing same together,and

a pair of relatively thick inprojecting ears on said clamps having elon- I gated slotted apertures, substantially as described.

9. In combination with an ignition dy' namo, a condenser comprising a bundle of insulating and conducting sheets, clamps surrounding and embracing the ends of said sheets whereby same are secured together, said clamps forming circuit terminals for the condenser, supports on said dynamo for said clamps, said supports forming circuit connections, and means for securing said clamps to said supports.

In testimony whereof I hereunto a-Hix my signature in the presence of two witnesses.

HARRY RANDOLPH VAN DEVENTER.

Witnesses:

E. B. IsLER, E. H. RHAME. 

